diff options
| author | Harald Freudenberger <freude@de.ibm.com> | 2018-06-07 07:19:48 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-06-25 10:21:16 +0200 |
| commit | ea3c4185efb34e3157caf0529be8f1a68acc0550 (patch) | |
| tree | 6e55002f2d42aa8d9ce60f97e7a26e5937024f16 /drivers/s390/crypto | |
| parent | 7daf201d7fe8334e2d2364d4e8ed3394ec9af819 (diff) | |
s390/zcrypt: Add ZAPQ inline function.
Added new inline function ap_pqap_zapq()
which is a C inline function wrapper for
the AP PQAP(ZAPQ) instruction.
Signed-off-by: Harald Freudenberger <freude@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto')
| -rw-r--r-- | drivers/s390/crypto/ap_asm.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_asm.h b/drivers/s390/crypto/ap_asm.h index 16b59ce5e01d..b22d30aaf810 100644 --- a/drivers/s390/crypto/ap_asm.h +++ b/drivers/s390/crypto/ap_asm.h @@ -70,6 +70,25 @@ static inline struct ap_queue_status ap_rapq(ap_qid_t qid) } /** + * ap_pqap_zapq(): Reset and zeroize adjunct processor queue. + * @qid: The AP queue number + * + * Returns AP queue status structure. + */ +static inline struct ap_queue_status ap_zapq(ap_qid_t qid) +{ + register unsigned long reg0 asm ("0") = qid | (2UL << 24); + register struct ap_queue_status reg1 asm ("1"); + + asm volatile( + ".long 0xb2af0000" /* PQAP(ZAPQ) */ + : "=d" (reg1) + : "d" (reg0) + : "cc"); + return reg1; +} + +/** * ap_aqic(): Control interruption for a specific AP. * @qid: The AP queue number * @qirqctrl: struct ap_qirq_ctrl (64 bit value) |